Stupid Question..

I know lots of you are whizzes with all this stuff, but as I'm pretty new to it, I'm going to ask a really silly question. How do you back up all your movies and tv shows to an external hard drive? I've found the option to back up to dvd, but that's not what I want to do as I have about 40gb of video. I'm using a laptop with windows xp installed and a freecom 250gb external hard drive.

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